Grinding mill



1,465,666 A. P. GRoHENs GRI NDI NG MILL Aug. 2l, 1923. 1,465,666

A. P. GRCHENS i GRINDING MILL Filed April 5, 1922 3 ShaetB-Sheet 2 W o o4 Aug. 2l, 1923. 1,465,666

A. P. GRoHENs GRINDING MILL Filed April 3, 1922 3 Sheets-Shes?, 5

Patented Aug. 21, 1923.

UNITED STATES PATENT OFFICE.

.ALBERT P. GROHENS, 0F MARSHALL, MICHIGAN.

GBINDING MILL.

Application lied April 3, 1922. Serial No. 549,064.

To all whom. :'tfmay cont-em: Y

Be it known thatI, Amm P. Gnormrrs, citizen of the United States, residin at Marshall, in the county of Calhoun and tate of Michigan, have invented new and useful Improvements in Grinding Mills, of which the following is a s ification.

This invention re ates to improvements in grinding mills and more especially to a grinding mill more particularly adapted for use in connection with the grindin of nuts and similar edible oil or fatty su tances. In the particular embodiment of my inventionV shown in this specification, I have disclosed a grinding mill adapted for grinding peanuts, in the maliing of peanut butter.

Among the features of my inventions is the provision of a inding mill which can be easily and cheap y made, which is readily assembled and taken apart for cleaning and repairing purposes, which is strong, durable, and fast and clean in operation.

Another feature of my improved mill is the provision in connection therewith of means for automatically feeding the peanut butter from the mill into containers, under pressure. Such feeding means forces the peanut butter out through the discharge spout into a. container; and also serves to carry away the peanut butter quickly and effectively from the grinding disks, thus preventing the peanut butter from backing up and interfering with the grinding operation.

Other features of my inventions include a vertical detachable conveyor, automatic salting` device, an agitator 1n the peanut hopper, and releasing means adapted to afford an instantaneous release between the grinder disks in case any hard substance, such as a nail, should accidentally pass into the mill. The details of these features and of other features and advantages of my inventions, will be explained more fully as I proceed with my specification.

In that. form of device embodyinr the features of my inventions, shown in t e accompanying drawings, Figure 1 is a vertical sections view of my improved Y indin mill, Fig. 2 is a view taken as indicated y the line 2 of Fig. 1, Fig. 3 is a view taken as indicated by the line 3 of Fig. 1, Fig. 4 is a view taken as indicated by the line 4 of Fig. 3, Fig. 5 is a view taken as indicated by the line 5 of Fig. 1, Fig. 6 is a view taken as 1, and Fig. 7

of Fig. 3.

As shown in the drawings, 10 indicates suitable supports or legs, strengthened by cross-framing 11, and supporting a table top or platform 12, on which the rinding mill proper is supported. Mounte on the table top 12 is a vertically arranged casting 13, which carries at its upper end a bearing 14, in which is rotatably supported a horizontally arranged shaft 15, carrying at one end a bevel gear 16. Any suitable means, not shown, are provided for driving the shaft 15.

The casting 13 carried, near its top on one side, an extension 17 lin which is formed a vertically arranged bearing 18, having rotatably mounted therein a verticallyV arranged sleeve 19 carrying on its upper end a bevel gear 20 meshing with the bevel gear 16. It will be seen by this construction, that rotation of the shaft 15 will drive the bevel gear 16, which in turn will drive the bevel gear 20 and sleeve 19. Directly below .the bearing 18 and in alinement therewith, mounted on the table top 12, is a feed-screw housing 25. A shaft 26 has its upper end extending into the sleeve 19. This shaft 26 extends downwardly through the feed-screw housing 25, and has its lower end somewhat below the table top 12. The upper end of the shaft 26, where the same lies within the sleeve 19, and a short distance below, has its two opposite sides slightly flattened, as indicated by 28. These flattened surfaces engage with corresponding projections within the sleeve 19; so that vertical sliding movement of the shaft 26 is permitted within the sleeve 19, but rotation therein is prevented. Slidably, but non-rotatably, mounted on the shaft. 26, within the feed-screw housing 25. is a feed screw 30 of the ordinary type. This feed screw 30 is provided with a vertically arranged slot adapted to engage with the spline 31 on the shaft 26, so that vertical sliding movement of the shaft with respect to the feed screw is permitted; but the feed screw is forced to rotate with the shaft. Lying within the feed-screw housing 25 is a cylindrical member 3T having its inner wall spirally grooved to cooperate with the grooves on the feed screw 30, in the usual manner, to cause downward feeding of material b v the screw 30, when the same rotates.

A, goiie n Y top 12 and concentrically arranged with the shaft 26, is au upper-s tlonanryrrgrindmg the stationary grinding disk 14:0. Mounted on `the ioiverend of theishaft Qifisiarmovby the rotation of the shaft 26'.- .The'laower I-fnce' oftheisstationaryldisk Afyndothe upgY per face of?themovable"fdiski 41 aieisuatablyf girodyedornotcihd, jor )tiroirideatori!1thi grin -e' ing teeth, is@V any sui-table manner; soi'that 30, as it isffechbetrirfeenY these .twoi faces of the Vgrinding disks,Y will :he f pulfueijiseif ati-d 'ground thereby g'thei completed ground qurodi uct escaping: Youtufardly faud-` dowrwairdlyf from between thedifsksut their perioheriesV It will be `noted that-Stliegrinding faces of these two disksdo'fnot 'lieyjin planes? Each of the faces is'slightly conceived, so that lthey 'are more :Widely seinarated at 5 the 4centers finer as the materiali beins: ground apf preaches the peripheriesfgthe disks@ The 1 partieular formation of thesnrfafceseon the grinding faces'of the disks 40 Yflorido-t1; arel E Y y l y (l so athustelandset that whentheollar 62 not shown. in'detail. sincethereisa variety@ of ways `.in which these may;'looltuerie,"` dit, ferent ones lieiugv suitable,A :for-dfferefnt ma.-`

torials, unddegrees of'nenessrtowhieh the same are to 'bep'roundi @j vMounted on the under slderof theitablioV top 12 and surrounding the disks 40` and 41 is a iiller or discharge casing 50 having a radially arranged filler or discharge .spout 51, having detachablymounted fone its endv Y Y i 41; @dise-rammelt fro-io the an extension spout 52. i

The movable grinding* disk ed on its under side, lying inside tot the filler casing 50j Vthree radially arranged varies 54; These Vvanos rhang downwardly from the disk V'i1 and: each Generis Jbent slightlyzbackward with respect tothe. direof"Vv tion of rotation of the diskr; so that they act to continually `force` the ground material fdownwardly and .out ofthe spouts 51 and butter out through the extension spout 52,`

under pressure` into containers which ma be placed on the end thereof, such as indi,

Vcated by 57. This forcefeedr, therefore, op,- Y @rates to compress the `peanut butter and` force the same into a container free `fromA bubbles; and such force feed also operates to remove the peanut butter downwardly from the grinding disks 40 and 41 and pass it out through the Spouts 51 and 52; thus indin 0 larger than the feed screw 30, terial fed downwardly by the feed screw will pass through this-hole zinfithfs cordial-oi` into @he grlndlng risks and lhterfe'rmgwith the eration.

ieans are provided for separa-ting the grinding disks in order to rel'ase the same in the event that any hard .suhstanceesughas a nail, asses into the mill and comesibetween the disks. The shaft 26 carries aweollar [169.be1omewhah-AS al" rangedu thrust-*boerin Y61 Egsi 3 and 7J-2f Rotatblrzilaoant on the shaftZ/, b0- low ,the i thrust Y'bearing 64s, Y 1 altar 62 Aiadasited rto 1be sota'ted by the Yle? i @The tunderside ofrih llar :is ide Eiaith a slantingicamimrtace or tooth. 'ia' l pted to i cooperate' with? ga.. Kcorrespondit;g'; notch,

haring 'seslnftingif surface 65,* oni the Atop of @boeiend-Seres hausinal; to t rotation if-fliepeolar 63 (clerkwise, leakm 4slownward):r Willause snide-tooth 64 wifi. strap 011 the s laritngg;M surfaoe `65,:tluis raising co1- lar 62; and athens, causing upward Vpressure through? the tirrssssi'beering 6l against the collar llitolift thejshaft 26.7; YSucliulijtingg ofithegshaitgiilllift the grind ug ldisk ligand bring,- :it closer to? the disk 0mg fThe rf s0, a.

djusted that Lwhen i the ,hllar el "erpos'ition, the disks 4;@ aad w; ely enough separated, that myt ibarilsubstances, such as riailsgjrhich might accidentally have fallen ilito the mill,

:will bauemitt/ed .to pass betvvelin ltheidisl 40, and 41 withoutdamage y The parts are isdn itsflileluearripstioni with thateth 64 9m ef the riatahitharindaadsks Liail be `1n their regular grinding posean-11,1 the j event of any hardsuhstauce passlngirito the @Ths followngd miams e rregugagtilgzan ajus in t e "i to `are rae @desiree eine tsss in grinding! Tlollar 6() hasA its'lglowe'fpart me sights 'sono Y .in .Y damse@ and .is anomalyand!sai1-es monats so siga 161. The lower nut 160cm be sorejgiiedjup or down en the, collar 60 and 4bears against the thrust bearing 61.V It will he obvious that adjustxrieut ofY this nut serves to Y,raise or lower' the shaftl 26` and adjust thefdistance between the grindin disks 40 and' The nut 161 serres as a ook nut to hold'tlie nut| 16D ni position. I r

Y '.Ihe following means are proyicfd for feediugpeanuts to the mill. indgcaites a el', hating a discharge mouth; 71, at

1,4es,eeo

discharge opening 71 into the feed-screw housing 25, where they are taken up by the spiral grooves on the feed screw 30 and fed downwardly into the disks 40 and 41. It

4will be noted here that the feed screw 30 is arranged vertically, and feeds downwardly, so that the feeding rocess is at all times assisted by gravity. eans are also rovided for agitatmg the peanuts in the ischarge spout 71, to prevent the same from clogging, such means comprisin an agitator rod 73 extending downward through the discharge spout 71 and aving its lower end adjacent the hole 72 in the feed-screw housing 25. The upper end of the agitator rod 73 is fastened to a strap 74, adapted to be reciprocated b the rotation of the shaft 26. The outer en of the strap 74 is provided with a slot operating over a guide bolt 75, and its inner end is attached to an eccentric strap 76 arranged on an eccentric 77 mounted on the sleeve 19. It will be seen, therefore, that rotation of the sleeve 19 will cause reciprocation of the strap 74, and consequent reci rocation of the agitator 7 3.

The follcwing means are provided for introducing and feeding salt and other desired materials into the peanuts as the same are fed into the feed-screw casing. Such means are shown most clearly in Figs. 2 and 5. 80 indicates a salt hopper, having horizontally arranged below it, in a suiable casing 81, a spiral feed screw 82, which may be of any suitable construction. The feed screw 82 is mounted on a shaft 83, suitably supported at its ends in the bearings 84 and adapted to be driven by a bevel gear 85, meshing with a bevel gear 86 on the end of the shaft 87 suitably supported in bearings S8. The shaft 87 has mountedion one end a belt wheel 90 adapted to be driven by a belt 91 running over a small belt wheel 92, on the shaft 15. The other end of the shaft 87 is provided with a smaller belt wheel 95 carrymg a belt 96 adapted to operate a wlieel 97 on one end of a shaft 98, extending horizontally through the lower end of the salt hop-- per 80 and carrying agitator arms 99,adapted to agitate salt 1n t e hopper and permit the same to be fed by gravity downwardly to the feed screw 82. The feed screw 82 carries the salt horizontally throu h the casing 81 to its end where it fa ls out throu h the discharge opening 100 and into a small hole 101, entering near the lower end of the discharge o eni 71, just before the peanuts enter the ole 2 in the upper end of the feed-screw housing 25.

While I have shown and described certain embodiments of my invention, it is to be understood that itis capable of man modications. Changes, therefore, in t e construction and arrangement may be made without departing from the spirit and scope of the inventiton as disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention as broadly as possible in view of the prior art.

What I claim as new and desire to secure by Letters Patent, is:

1. In a grinding mill, a hopper adapted to contain material to be ground, a vertical feed-screw casing having an opening at the top to receive material from the hopper, grinding means located below the feed-screw casing, a feed screw within the feed-screw casing adapted to feed, with the aid of gravity, material to be ground downwardly from the hopper to the grinding means, and means for introducing salt into the material as it leaves the feed hopper.

2. In a grinding mill, a hopper adapted to contain material to be ground, a vertical feed-screw casing having an opening at the top to receive material from the hopper, grinding means located below the feed-screw casing, a feed screw within the feed-screw casing adapted to feed, with the aid of gravity, material to be ground downwardly from the hopper to the grinding means, and means for introducing salt into the material as it leaves the feed hopper, said means comprising a salt hopper and means for feeding salt from said salt hopper to the material to be ground as it leaves the feed ho per.

Witness my hand and seal th1s 31st day of March, 1922.

ALBERT4 P. GRoHENs. [1.. 5.] 

